Metanoia was released in the 1970s. Arnie Katz, in his article "What Are The Greatest Fanzine?", in Vegas Fandom Weekly #99, from July 2007, writes, "Greg Shaw inspired a vogue for small, personal fanzine in the mid-1970s with this zine, which remained tops in the boomlet it created. Greg combined personal experience, fannishness and an intense interest in popular music into a wonderful editorial package."